NC Final Exam Released 2014

QuizÂ by John

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15 questions
• Q1
The density of copper is 8.96. The melting point of copper is 1,084 degrees Celsius. The boiling point of copper is 2,560 degrees Celsius. How does the density of a 4-gram sample of copper compare to that of a 12-gram sample of copper?
Its density is three times the density of the 12-gram sample.
Its density is one-half the density of the 12-gram sample.
Its density is the same density as the 12-gram sample.
Its density is twice the density of the 12-gram sample.
30s
• Q2
Which is considered a good insulator of heat?
aluminum, because it allows heat to flow easily
glass, because it allows heat to flow easily
plastic, because heat is unable to flow easily through it
silver, because heat is unable to flow easily
30s
• Q3
Why are there high and low tides on Earth?
They are due to changes in the moon's speed every month.
They are due to changes in the moon's tilt on its axis.
They are due to the magnetic force between Earth and the moon.
They are due to the gravitational pull between Earth and the moon.
30s
• Q4
Which contributes to Earth's ability to sustain life?
The atmosphere is extremely thin due to the temperature of the sun.
The atmosphere allows all of the sun's radiation to enter due to Earth's distance from the sun.
The atmosphere is breathable due to the unique mixture of gases.
The atmosphere prevents all space debris from reaching the surface due to the ozone layer.
30s
• Q5
How does gravity support life on Earth?
by keeping water and gases in the atmosphere close to Earth's surface, which contributes to life processes
by causing changes in the distance between Earth and the sun, which contributes to the seasons
by forcing Earth to continuously spin on it axis, which contributes to day and night
by preventing meteors and comets from hitting Earth's surface, which protects living organisms from space fragments
30s
• Q6
Which best summarizes the composition of the surface of Earth?
Earth's surface contains more land than water.
One-fourth of Earth's surface is water.
Three-fourths of Earth's surface is land.
Earth's surface contains more water than land.
30s
• Q7
Which is the basic composition of Earth's core?
The liquid inner core is surrounded by a solid outer core.
The solid inner core is surrounded by a liquid outer core.
Both the inner core and the outer core are solid.
Both the inner core and the outer core are liquid.
30s
• Q8
Which best explains the movement of tectonic plates?
They move several feet each year because of convection within Earth.
They move several miles each year because of convection within Earth.
They move several centimeters each year because of convection within Earth.
They move several kilometers each year because of convection within Earth.
30s
• Q9
How do the P-waves, Sound Waves, and Light Waves compare?
Light waves and P-waves are transverse waves, while sound waves are longitudinal waves.
Sound waves, P-waves, and light waves are all longitudinal waves.
Sound waves and P-waves are longitudinal waves, while light waves are transverse waves.
Light waves, P-waves, and sound waves are all transverse waves.
30s
• Q10
Which best explains the relationship between parent rock and soil composition?
Weathered parent rock is the smallest component of soil.
Weathered parent rock determines the amount of air found in the soil.
Weathered parent rock determines the number of organisms found in the soil.
Weathered parent rock is the largest component of soil.
30s
• Q11
What would happen to a plant if it were turned away from the light source?
The plant would be unaffected.
The plant would bend towards the light source.
The plant would move away from the light source.
The plant would stop growing.
30s
• Q12
Tulips are flowers that typically bloom in the spring. How could tulips be forced to bloom in the winter?
by limiting pruning and trimming of the tulips
by reducing water levels and nutrients uptake by the tulips
by increasing temperature and lengthening daylight for the tulips.
by decreasing temperature and lengthening daylight for the tulips
30s
• Q13
How does sound usually travel?
An object vibrates, and those vibrations travel through the air in one direction as transverse waves.
An object vibrates, and those vibrations travel through the air in all directions as longitudinal waves.
An object vibrates, and those vibrations carry air in all directions as transverse waves.
An object vibrates, and those vibrations carry air in one direction as longitudinal waves.
30s
• Q14
Which is true for every atom of an element?
It can be seen with a magnifying glass.
It has mass and volume.
It is joined together with another atom.
It is weightless.
30s
• Q15
A student has two pieces of aluminum foil. Each piece can be folded and rolled into a wire. Why do both pieces of aluminum foil behave the same way?
They are composed of the same type of atoms.
They have the same chemical properties, but different physical properties.
They are composed of different types of atoms.
They have the same physical properties, but different chemical properties.
30s

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